Obertshausen (German: [oː.bɛʁt͡s.ˈhaʊ̯.zn̩] (listen)) is a town in the Offenbach district in the Regierungsbezirk of Darmstadt in the state of Hesse, Germany. It has around 24,000 inhabitants. In 865, Obertshausen had its first documentary mention under the name Oberdueshuson in a paper from the Benedictine monastery at Seligenstadt as one of the monastery's landholdings. In 1069, Heinrich IV donated to Saint Jacob's Monastery in Mainz some newly cleared land in the Wildbann Dreieich (a royal hunting forest). The land lay near the village of Hyson in the Maingau. At this time, the Lords of Hagenhausen-Eppstein exercised lordly rights (Hoheitsrechte) in Obertshausen and Hausen. In Obertshausen stood a moated castle shaped like a defensive tower, called the Burgk im Hayn (or Burg im Hayn in modern German spelling). The Lords of Hausen, a sideline of those of Hagenhausen, once had holdings here. More information...
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